KR101824331B1 - Tidal generator maintenance equipment using magnetic coupling - Google Patents

Abstract

The present invention relates to a maintenance device for a tidal stream power generator, using a magnetic coupling, and, specifically, to a maintenance device for a tidal stream power generator, using a magnetic coupling, which is to conveniently perform maintenance of a tidal stream power generator by using a magnetic coupling which is one of a non-contact type power transmission method. According to the present invention, the maintenance device for a tidal stream power generator, using the magnetic coupling, includes: a cylindrical base; an inflow blocking unit sealing one side of the base; a cylindrical inner rotor located in the inflow blocking unit and including an inner magnet installed in order for an N-pole and an S-pole to be alternatively installed along the outer circumference; a cylindrical outer rotor located outside of the inflow blocking unit and having a hollow including an outer magnet transmitting or receiving magnetism by facing the inner magnet in the inner rotor; a bearing unit mounted on front and rear of the inflow blocking unit and helping rotation of the inner rotor and the outer rotor; and a magnetic member installed along the inner circumference of the outer rotor and coming into contact with the outer magnet. The inflow blocking unit is located between the inner rotor and the outer rotor and forms a watertight structure while maintaining intervals of the inner rotor and the outer rotor. The magnetic member loses the magnetism in accordance with whether power is applied. So, the maintenance device for a tidal stream power generator can be easily assembled and disassembled.

Description

[0001] Tidal generator maintenance equipment using magnetic coupling [0002]

[0001] The present invention relates to an alga generator maintenance apparatus to which magnetic coupling is applied, and more particularly, to a magnetic coupling for performing maintenance of a bird generator more easily by applying a magnetic coupling, which is one of non- The present invention relates to a tidal generator maintenance apparatus.

Major developments using marine energy are tidal power generation using the potential energy of seawater and tidal power generation using the kinetic energy of seawater.

The tidal power generator is a power generation device that extracts energy from tidal currents, that is, tidal current, while using tide as a power source.

Tidal power generation is a method of generating electric energy by generating electricity by using the water level difference between reservoir and sea level at the time of ebb tide by installing seawater and blocking the seawater by blocking the seawater only with the dike where tide occurs. In other words, it is a system similar to hydroelectric power generation system in which a dam is constructed only at a large tidal range, and a dam is constructed at a river estuary and the turbine is rotated at the time of tide and ebb.

On the other hand, tidal power generation does not need to install a dam like a tidal power generation because it is a method of using the fast flow of seawater, that is, the flow of natural seawater. Propeller type, Darrieus type, Savonius type, and modified or modified versions of these turbine generators are used for tidal power generation.

Since the tidal generator requires only a water turbine generator required for power generation without a tidal dam, the cost is low, but the flow rate of the tidal flow must be above a certain speed, so it is difficult to select a suitable place. There is a disadvantage in that the amount of power generation is influenced. However, the distribution of seawater is free and has little impact on the marine environment, so it is considered to be more environmentally friendly than tidal power generation.

Therefore, in the case of tidal current, it is possible to know the forecast of the flow almost accurately and to make regular development. The west coast of Korea is evaluated as the best place for tidal current generation.

Conventionally, an example of a conventional tidal power generator has a problem that it is generally difficult to maintain a watertight structure for preventing intrusion of seawater because a power generation turbine is located in water and a structure including a generator and a power train is located in the water It was inherent.

In other words, most faults in tidal power generation occur in nacelle components including powertrain and generators due to aging of the watertight structure, and double or triple watertight structures can be adopted to reduce maintenance costs, Because of the structural problems that can not be completely separated from the inside and the outside, the performance of the generator can not be guaranteed during the lifetime of the generator.

In addition, there is a problem that the double or triple watertight structure is dismantled or the maintenance time is long and the cost is increased due to the characteristics of the underwater environment.

That is, the conventional tidal power generator has a problem in that maintenance and repair are costly due to the nature of the underwater environment, and most of the causes of the trouble are the seawater flowing into the equipment, which requires complete watertightness.

Accordingly, in order to solve the above problems, the inventor of the present invention has proposed a patent application No. 10-2014-0152704 entitled " Underwater Moirling Tidal Generator Using a Magnetic Coupler ", filed on Apr. 11, 2014 and Patent Application No. 10-2014- 0152705 'Strut-water-tight bird generator using magnetic coupler' (filed on April 21, 2014).

On the other hand, conventional tidal generators are installed in the ocean and have considerable difficulties in repairing or repairing equipment. Particularly, the tidal generator with magnetic coupling has very great advantages that it can solve watertightness and conventional problems by non-contact power system.

However, in the case of a small-sized magnetic coupling with magnetic coupling, it is possible to assemble or disassemble it with small equipment because the attractive force is relatively small when assembling or disassembling. However, as the equipment becomes larger, a separate jig (JIG) is required because of the force, and an efficient maintenance device capable of solving such a problem is required.

Korean Patent Application No. 10-2014-0152704 entitled " Submersible mooring tidal generator using magnetic coupler " (filed on May 4, 2014). Korean Patent Application No. 10-2014-0152705 entitled " Strut water tight structure algae generator using magnetic coupler " (filed on May 4, 2014).

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned needs and problems, and it is an object of the present invention to provide a tidal power generator having a magnetic coupling separated by an outer rotor and an inner rotor, The purpose of the present invention is to provide an economical and time-saving 'bird generator maintenance device equipped with magnetic coupling'.

In order to achieve the above-mentioned object, an apparatus for maintenance of an alga generator, to which the magnetic coupling is applied according to the present invention, comprises a cylindrical base, an inflow blocking portion for sealing one side of the base, An inner rotor having a cylindrical inner magnet provided with an N pole and an S pole alternating with each other along the periphery of the inner rotor and an inner magnet disposed opposite to the inner magnet in the inner rotor, A cylindrical outer rotor having a hollow provided with an outer magnet for transmitting or receiving a magnetic force and a bearing part mounted on front and rear sides of the inflow blocking part to assist rotation of the inner rotor and the outer rotor, And a magnetic member provided along the periphery of the outer rotor and in contact with the outer magnet, The air inlet interrupting portion is located between the inner rotor and the outer rotor to form a watertight structure while maintaining a distance between the inner rotor and the outer rotor, and the magnetic member loses its magnetic force And is easily assembled and disassembled.

The tidal generator maintenance apparatus using the magnetic coupling proposed in the present invention has an advantage in that it can be easily disassembled and assembled by reducing the magnetic force according to power application to the magnetic member.

Further, since the magnetic force of the magnetic body member is used to reduce the attractive force to perform the maintenance, the cost is reduced, which is economical and the time is shortened.

In addition, there is an advantage that an attractive force with a magnet is adjusted by using a magnetic member to facilitate maintenance without restriction of a magnetic force.

In addition, there is an advantage that the tidal generator is enlarged and the problem of difficulty in disassembling in the past due to an attractive force due to magnetic force is solved.

1 is a schematic perspective view showing a concept of magnetic coupling according to an embodiment of the present invention.
FIG. 2 is another schematic perspective view showing a concept of magnetic coupling according to an embodiment of the present invention. FIG.
FIG. 3 is an exemplary conceptual diagram of a magnet configuration of a magnetic coupling inner rotor and an outer rotor proposed in the present invention. FIG.
4 is a conceptual diagram of a permanent magnet and an electromagnet for an inner-rotor and an outer-rotor of a magnetic coupling according to an embodiment of the present invention.
FIG. 5 is a conceptual diagram for explaining the principle of generating about twice the magnetic force when two identical magnets are connected.
6A is a view for explaining the degree of the gap between the magnet and the electromagnet when the electromagnet is on, FIG. 6B is a view for explaining the degree of the gap between the magnet and the electromagnet when the electromagnet is off to be.
7 is a conceptual diagram of a permanent magnet and an electromagnet magnet for an inner-rotor and an outer-rotor of a magnetic coupling according to another embodiment of the present invention.
Fig. 8 is a view for explaining an exemplary magnet and electromagnet for the magnetic coupling. Fig.
9A is a view for explaining the degree of the gap between the magnet and the electromotive magnet when the electromagnet is turned off. FIG. 9B is a graph showing the degree of the gap between the magnet and the electromagnet Fig.
10 is an exemplary conceptual diagram illustrating application of the magnetic coupling proposed in the first embodiment of the present invention.
11 is a schematic view showing an alga generator maintenance apparatus to which a magnetic coupling according to a first embodiment of the present invention is applied.
FIG. 12 is an exemplary conceptual diagram illustrating application of the magnetic coupling proposed in the second embodiment of the present invention.
FIG. 13 is a schematic view showing an alga generator maintenance apparatus to which a magnetic coupling according to a second embodiment of the present invention is applied.
FIG. 14 is an exemplary conceptual diagram illustrating application of the magnetic coupling proposed in the third embodiment of the present invention.
FIG. 15 is a schematic view showing a tidal generator maintenance apparatus to which a magnetic coupling according to a third embodiment of the present invention is applied.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the exemplary embodiments of the present invention, reference will be made to the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification.

In the accompanying drawings, some of the constituent elements are exaggerated, omitted or schematically shown, and the size of each constituent element does not completely reflect the actual size. In addition, the same reference numerals are assigned to the same or corresponding components throughout the accompanying drawings.

FIG. 1 is a schematic perspective view illustrating a concept of magnetic coupling according to an embodiment of the present invention, and FIG. 2 is another schematic perspective view illustrating a concept of magnetic coupling according to an embodiment of the present invention.

As shown in FIG. 1, a main feature of the present invention is that a magnetic coupler is used which is divided into an outer rotor and an inner rotor, The maintenance device for magnetic coupling includes a cylindrical inner rotor 110 including an inner magnet 111 and a hollow cylindrical outer rotor 120 having an outer magnet 121, And a fluid inflow blocking portion 130 spaced apart from the outer rotor 120 by a predetermined distance to protect the inner rotor 110 and maintain watertightness.

2, the maintenance device for the magnetic coupling proposed in the present invention is mounted on the front and rear sides of the inflow blocking portion 130 and rotates between the inner rotor 110 and the outer rotor 120 The bearing unit 140 may include a first bearing 141, a second bearing 142, and a third bearing 143 that smoothly maintain the bearing unit 140.

Accordingly, the power is transmitted by using a permanent magnet to transmit kinetic energy as magnetic force and to enable non-contact power transmission. However, the present invention smoothly reduces the magnetic force generated in the magnetic coupler Or can be removed and maintained smoothly for large-sized bird generators installed in the ocean.

First, the characteristics of magnetic coupling will be described as follows.

As shown in FIGS. 1 and 2, magnetic coupling takes a non-contact power transmission mode. That is, since they are spaced apart by a predetermined distance without being physically contacted by magnetic force, there is no oscillation and noise due to wear due to non-contact type power transmission.

Also, since the power transmission by the magnet can be continuously used, the exchange and management cost can be saved and the operation rate of the device can be improved.

In addition, even when deviating from the shaft center in designing or assembling, there is little influence on the torque transmission, and slip occurs when the allowable load exceeds the permissible load, thereby preventing damage to the inside of the equipment.

In particular, the magnetic coupling method is capable of watertight function. That is, a partition wall is provided between an inner-rotor and an outer-rotor of a magnetic coupler, so that it can be applied to an apparatus requiring watertightness such as a bird generator.

As shown in Fig. 2, a general magnetic coupling is made using a permanent magnet. This minimizes the air gap in the magnetic coupling design because it is important to reduce the air gap, the air gap, in order to optimize the magnetic coupling. That is, attraction and repulsion are inversely proportional to square of distance.

In the case of a small magnetic coupling, the attractive force is relatively small when assembled or disassembled. Therefore, it is easy to assemble or disassemble it with a small equipment. However, as the bird generator becomes larger, Since an attractive force is generated by a large magnetic force, a separate jig (JIG) is required.

Therefore, the present invention has been completed by applying an electromagnet or electromagnet to solve these problems and needs.

FIG. 3 is an exemplary conceptual view of a magnet configuration of a magnetic coupling inner rotor and an outer rotor proposed in the present invention, and FIG. 4 is an explanatory view showing an example of a magnet coupling FIG. 5 is a conceptual diagram illustrating a principle of generating about two times of magnetic force when two identical magnets are connected to each other. FIG. 5 is a conceptual diagram of a permanent magnet and an electromagnet for an inner-rotor and an outer- .

6A is a view for explaining the degree of the gap between the magnet and the electromagnet when the electromagnet is on, FIG. 6B is a view for explaining the degree of the gap between the magnet and the electromagnet when the electromagnet is off to be.

As shown in FIG. 3, the present invention develops a new type of magnetic coupling capable of controlling magnetic force by changing the magnet configuration of an inner-rotor and an outer-rotor.

That is, as shown in FIG. 3, the maintenance apparatus for the magnetic coupling proposed in the present invention includes a permanent magnet unit of a magnetic coupling by mixing an electromagnet, an electromotive force magnet, or a permanent magnet.

For example, as shown in FIG. 4, an inner-rotor and an outer-rotor configuration of a magnetic coupling may be configured as permanent magnets 111 and electromagnets 151 ), The rotational force due to the magnetic force is transmitted when the electromagnet is powered, and the magnetic force is lost when the electromagnet is turned off, which facilitates assembly and disassembly.

5, the electromagnet 151 and the magnet 121 may be magnetically coupled to each other to minimize the power consumed by the electromagnet 151 by using a principle in which two magnets are generated when the two identical magnets are connected. Can be used.

At this time, when the electromagnet is turned off, the electromagnet 151 is not attracted by the magnetic force, so the attractive force with the neighboring magnet is weakened.

If the magnet and the electromagnet are assumed to be a single magnet when the electromagnet is on, and the gap is narrow as shown in Fig. 6 (a), the electromagnet is a simple magnetic body when the electromagnet is turned off, The attractive force that is widening is reduced.

Therefore, when the power of the electromagnet is turned on, the magnetic force of the electromagnet and the magnetic force of the permanent magnet are transmitted, and when the power is turned off, the magnetic force of the electromagnet is lost, the attractive force is reduced and assembly and disassembly are facilitated. That is, the attractive force is inversely proportional to the square of the distance.

As described above, the magnetic force can be controlled through the on / off control of the electromagnet, and the magnetic force can be precisely controlled during the PWM (Pulse With Modulation) control.

FIG. 7 is a conceptual diagram of a permanent magnet and an electromotive magnet for an inner-rotor and an outer-rotor of a magnetic coupling according to another embodiment of the present invention, and FIG. Fig. 8 is a view for explaining a magnet and an electrostatic magnet. Fig.

9A is a view for explaining the degree of the gap between the magnet and the electromotive magnet when the electromagnet is turned off. FIG. 9B is a graph showing the degree of the gap between the magnet and the electromagnet Fig.

7, in an alternative embodiment of the present invention, the inner-rotor and outer-rotor configurations of the magnetic coupling may be configured as a permanent magnet 111 and an electrostatic magnet 151 ' Can be configured.

At this time, when the power of the permanent magnet 151 is turned off, the permanent magnet 151 'is magnetized like a permanent magnet so that a rotational force is transmitted by the magnetic force. When the permanent magnet 151' is turned on, And is added as a gap to the distance where the electromotive magnet 151 'is located, so that the attractive force is reduced, which facilitates assembly and disassembly. Here, when the magnetic coupling is driven, there is an advantage that the electromotive magnet 151 'does not need to use a power source at all times.

As shown in Fig. 8, the magnetic coupling is rotated by attraction between the magnet 111 and the electromagnet 151 '. In this case, it is advantageous to use the electromagnet 151 'and the magnet 121 together in order to minimize the power consumed by the electromagnet magnet, and since the electromagnet 151' has no magnetic force when the electromagnet is turned on, The attractive force with respect to the elastic member is weakened, which facilitates assembly, separation or disassembly.

If the gap between the magnet and the electromagnet is assumed to be a single magnet when the electromagnet magnet is turned off and the gap is narrow as shown in FIG. 9 (a), since the electromagnet is a simple magnetic body when the electromagnet is turned on, The attractive force, as shown in b), decreases.

Therefore, when the electromagnet is turned off, the magnetism of the electromagnet 151 'and the magnetism of the permanent magnet are transmitted. When the electromagnet 151' is turned on, the electromagnet 151 ' The disassembly becomes easy. That is, the attractive force is inversely proportional to the square of the distance.

As described above, the magnetic force can be controlled through the magnet on / off control, and the magnetic force can be precisely controlled in the PWM (Pulse With Modulation) control.

FIG. 10 is an exemplary conceptual view illustrating application of the magnetic coupling proposed in the first embodiment of the present invention, and FIG. 11 is a schematic view showing a tidal generator maintenance apparatus to which the magnetic coupling according to the first embodiment of the present invention is applied FIG.

12 is an exemplary conceptual view illustrating application of the magnetic coupling proposed in the second embodiment of the present invention, and FIG. 13 is a view showing an apparatus for maintaining the tide generator to which the magnetic coupling according to the second embodiment of the present invention is applied Fig.

14 is an exemplary conceptual view illustrating application of the magnetic coupling proposed in the third embodiment of the present invention, and FIG. 15 is a view showing an apparatus for maintaining the tide generator to which the magnetic coupling according to the third embodiment of the present invention is applied Fig.

10 is an example of application to an inner-outer rotor type magnetic coupling, wherein the inner rotor is a permanent magnet and the outer rotor is an electromagnet or electromagnet And a permanent magnet.

On the other hand, as shown in FIG. 12, the inner rotor may be one of an electromagnet or an electromagnet and a permanent magnet, and the outer rotor may be constituted by a permanent magnet.

14, the inner rotor is an electromagnet or a permanent magnet, and the outer rotor is composed of one of an electromagnet or an electromagnet and a permanent magnet. Changes will be possible.

Further, the present invention may be applied to a magnetic coupling of a disk type according to another embodiment.

In the present invention, members such as the electromagnet 151 and the electromagnet 151 ', which are supplied with power from the outside and generate or lose a magnetic force according to power application, are collectively referred to as magnetic members 150 and 150'.

Accordingly, the present inventors have derived the following invention based on the above-described experimental results.

11, the alga generator maintenance apparatus 100 to which the magnetic coupling proposed in the first embodiment of the present invention is applied includes a cylindrical base 101, And an inner magnet (111) disposed inside the inflow blocking portion (130) and having an N pole and an S pole alternating with each other along an outer periphery, And an outer magnet 121 disposed outside of the inflow blocking portion 130 and installed to be opposite to the inner magnet 111 in the inner rotor 110 to transmit or receive a magnetic force, A bearing unit 140 mounted on front and rear sides of the inflow blocking unit 130 to assist rotation of the inner rotor 110 and the outer rotor 120; And an outer rotor 120 installed along the circumference of the outer rotor 120, And a magnetic body member 150 formed in contact with the outer rotor 120. The inner rotor 130 is disposed between the inner rotor 110 and the outer rotor 120, A watertight structure is formed while maintaining the mutual spacing distance between the electrons 110 and the outer rotor 120. When the magnetic member 150 loses its magnetic force depending on whether power is applied or not, The attractive force due to the magnetic force between the outer rotor 120 is reduced in inverse proportion to the square of the distance occupied by the magnetic member 150, thereby facilitating assembly and disassembly.

The magnetic body member 150 may be an electromagnet 151 that is not magnetically powered without receiving power from an external electric device and may be an electromotive magnet 151 ' .

13, the alga generator maintenance apparatus 100a to which the magnetic coupling proposed in the second embodiment of the present invention is applied comprises a cylindrical base 101, And an outer magnet (121) disposed on the outer side of the inflow blocking portion (130) and having an N pole and an S pole alternating with each other along the inner circumference, An outer rotor 120 of the outer rotor 120 and an inner magnet 111 disposed inside the outer rotor 120 and facing the outer magnet 121 to transmit or receive a magnetic force, a bearing portion 140 mounted on front and rear sides of the inflow blocking portion 130 to assist rotation of the inner rotor 110 and the outer rotor 120; (110), and an outer rotor And a magnetic member 150 which is in contact with the inner magnet 111. The inflow blocking portion 130 is located between the inner rotor 110 and the outer rotor 120, A watertight structure is formed while maintaining the mutual spacing distance between the electrons 110 and the outer rotor 120. When the magnetic member 150 loses its magnetic force depending on whether power is applied or not, The attractive force due to the magnetic force between the outer rotor 120 is reduced in inverse proportion to the square of the distance occupied by the magnetic member 150, thereby facilitating assembly and disassembly.

The magnetic body member 150 may be an electromagnet 151 that is not magnetically powered without receiving power from an external electric device and may be an electromotive magnet 151 ' .

15, the tidal generator maintenance apparatus 100b to which the magnetic coupling proposed in the third embodiment of the present invention is applied comprises a cylindrical base 101, A cylindrical inner rotor 110 provided with an inner magnet 111 disposed at an inner side of the inflow blocking portion 130 and having N poles and S poles alternating with each other, And an outer magnet 121 disposed outside the inflow blocking portion 130 and facing the inner magnet 111 in the inner rotor 110 to transmit or receive a magnetic force, A bearing portion 140 mounted on front and rear sides of the inflow blocking portion 130 to assist rotation of the inner rotor 110 and the outer rotor 120, The outer magnet 121 is installed along the periphery of the outer rotor 120, And a second magnetic member 150 'which is disposed along the outer periphery of the inner rotor 110 and is in contact with the inner magnet 111. The first magnetic member 150,

The inflow blocking portion 130 is positioned between the inner rotor 110 and the outer rotor 120 to maintain the distance between the inner rotor 110 and the outer rotor 120, And the attraction force due to the magnetic force between the inner rotor 110 and the outer rotor 120 when the first and second magnetic member members 150 and 150 ' attractive force is reduced in inverse proportion to the square of the distance occupied by the first and second magnetic member members 150 and 150 ', thereby facilitating assembly and disassembly.

The first and second magnetic member members 150 and 150 'may be electromagnets 151 that lose their magnetic force when they are not supplied with power from an external electric device. When the power is supplied from an external electric device, May be a magnet 151 '.

Next, the tidal generator maintenance apparatus to which the magnetic coupling proposed in the present invention is applied can be operated as follows.

The maintenance apparatus according to an embodiment of the present invention includes a cylindrical inner rotor 110 including an inner magnet 111 and a cylindrical outer rotor with a hollow formed therein, And a fluid inflow blocking portion 130 which is formed to include the inner rotor 120 and is spaced apart from the outer rotor 120 by a predetermined distance to protect the inner rotor 110 and maintain watertightness.

In this case, the shaft of the inner rotor 110 may be connected to a generator that generates power by generating electricity, or a blade that generates power. On the other hand, a shaft of the outer rotor 120 may receive a blade or power for generating power, To the generator.

The inner rotor 110 has a cylindrical shape, which is located inside the inflow blocking portion 130 and is provided with an inner magnet (an inner magnet) 111 arranged and arranged alternately in the N pole and the S pole. Alternatively, as shown in FIG. 12, it may further include a magnetic member 150 which is installed along the outer periphery of the inner rotor 110 and which is in contact with the inner magnet 111.

The outer rotor 120 includes an outer magnet 121 disposed outside the inflow blocking portion 130 and disposed opposite to the inner magnet 111 in the inner rotor 110 to transmit or receive magnetic force And has a hollow cylindrical shape.

The outer magnetic member 120 may further include a magnetic member 150 disposed along the periphery of the outer rotor 120 and being in contact with the outer magnet 121.

At this time, the gap between the inner rotor 110 and the outer rotor 120 is supported by the bearing 140.

An outer fluid inflow blocking portion 130 for protecting and sealing the inner rotor 110 or the inner magnetic member (see FIGS. 12 and 14) is provided between the inner rotor 110 and the outer rotor 120 .

The fluid inflow blocking portion 130 may be made of a non-magnetic material such as stainless steel, ceramic, or plastic to protect the inner rotor 110 and to seal the fluid flowing from the outside and smoothly transmit magnetic force And may be formed or coated with a thin film.

In this way, the inside and the outside are physically separated completely using the magnetic coupling method, so that the watertightness can be improved.

That is, since the magnetic coupling device composed of the inner rotor 110, the outer rotor 120 and the inflow blocking portion 130 is used, a physical gap in which the fluid can flow is not made, It has the advantage of being able to.

On the other hand, between the fluid inflow blocking portion 130 and the base 101 is sealed with an O-ring (not shown) for watertightness. That is, an o-ring (not shown) is used to seal the gap between the inflow blocking portion 130 and the base 101.

As shown in FIGS. 11 and 15, in the first and third embodiments of the present invention, the magnetic members 150 and 150 ', which are installed along the periphery of the outer rotor 120 and are in contact with the outer magnet 121, Respectively.

13, in the second embodiment of the present invention, the magnetic member 150 is disposed along the outer periphery of the inner rotor 110, and is in contact with the inner magnet 111. As shown in FIG.

Accordingly, the inflow blocking portion 130 is positioned between the inner rotor 110 and the outer rotor 120 to form a watertight structure while maintaining a mutual distance between the inner rotor 110 and the outer rotor 120 And the magnetic body members 150 and 150 'lose their magnetic force depending on whether the power is applied or not, so that assembly, separation, disassembly, and the like are facilitated.

In other words, the magnetic members 150 and 150 'lose their magnetic forces depending on whether the power is applied or not, so that the attractive force due to the magnetic force is reduced, and even the large bird generators due to the attractive force can be separated In order to disassemble, a strong magnetic force can be excluded and maintenance can be performed, thereby facilitating an operation.

More specifically, as shown in FIGS. 6 and 9, a conceptual gap is further generated by the distance occupied by the magnetic member 150, so that the attractive force of the magnetic force decreases in inverse proportion to the square of the distance .

Particularly, the magnetic substance members 150 and 150 'can be the electromagnet 151 that can apply the electromagnet 151 or the electromagnet 151', and the electromagnet 151 that does not have the magnetic force when the power is not supplied from the external electric apparatus, And may be an electromotive magnet 151 'that has no magnetic force when power is supplied from the electric device.

The first bearing 141, the second bearing 142, and the third bearing 142, which are mounted on the front and rear sides of the inflow blocking portion 130 to smoothly maintain the rotation between the inner rotor 110 and the outer rotor 120, And a bearing portion 140 composed of a bearing portion 143.

The bearing unit 140 includes a first bearing 141, a second bearing 142, and a third bearing 143, and may be additionally provided as required.

The first bearing 141 maintains mutual spacing at a point where it meets the root of the flow-in blocking part 130 and the inner end of the outer rotor 120, and supports the first bearing 141 to rotate smoothly.

The second bearings 142 are spaced apart from each other at a position where the head portion of the inflow blocking portion 130 meets the inner side of the outer rotor 120 to support the second bearing 142 to rotate smoothly. However, the position may be changed as needed.

The third bearing 143 serves to support the inner rotor 130 and the inner rotor 110 so that the third bearing 143 is spaced apart from the inner rotor 130 and smoothly rotates.

Accordingly, the tidal generator maintenance apparatus using the magnetic coupling proposed in the present invention can be expected to have the following effects.

The tidal generator maintenance apparatus using the magnetic coupling proposed in the present invention is advantageous in that the magnetic member 150 can be easily disassembled and assembled by reducing magnetic force according to whether the power is applied to the magnetic member 150 or not.

In addition, since the magnetic force of the magnetic body member 150 is used to reduce the attractive force to perform the maintenance, the cost is reduced, which is economical and the time is shortened.

It is also possible to adjust the attractive force with the magnet by using the magnetic body member 150, that is, the electromagnet 151 or the electromagnet 151 ', to provide an advantage that the maintenance is easy without restriction of the magnetic force .

In addition, there is an advantage that the tidal generator is enlarged to solve the problem that it is difficult to separate, repair, assemble and disassemble conventionally due to an attractive force due to magnetic force.

In addition, the outer rotor (OUTER ROTOR) and the inner rotor (INNER ROTOR) transmit the power by using the magnet (magnetic body). Therefore, it is necessary to physically isolate the water- There is an advantage to be able to.

In addition, the inner rotor can be watertight while protecting the inner rotor between the outer rotor and the inner rotor through the inlet / outlet block 130, There is an advantage.

Also, the outer rotor and the inner rotor are spaced apart from each other by a predetermined distance, and the fluid is filled and lubricated at the spaced apart portion, so that the heat generated by the rotation can be directly discharged.

Further, in the case of the magnet coupling system, there is an advantage that noise is reduced since the power transmission is non-contact.

The tidal generator maintenance apparatus to which the magnetic coupling proposed in the present invention is applied has been described with reference to the embodiments. The present specification and drawings disclose one embodiment of the present invention, and although specific terms are used, they are used in a generic sense only to facilitate the description of the present invention and the understanding of the present invention.

Accordingly, the scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms without departing from the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: Maintenance apparatus proposed by the present invention
110: Inner rotor
120: Outer rotor
130:
140: bearing part
150:

Claims (5)

A cylindrical base,
An inflow blocking portion for sealing the one side of the base,
A cylindrical inner rotor disposed inside the inflow blocking portion and provided with an inner magnet alternating between an N pole and an S pole along an outer periphery,
A cylindrical outer rotor having a hollow portion formed on an outer side of the inflow blocking portion and facing the inner magnet in the inner rotor and having an outer magnet for transmitting or receiving a magnetic force,
A bearing portion mounted on front and rear sides of the inflow blocking portion to assist rotation of the inner rotor and the outer rotor,
And a magnetic member provided along a circumference of the outer rotor and in contact with the outer magnet,
Wherein the inflow blocking portion is positioned between the inner rotor and the outer rotor to form a watertight structure while maintaining a mutual distance between the inner rotor and the outer rotor,
Wherein the magnetic member is an electromagnet or electromagnet,
An attractive force due to a magnetic force between the inner rotor and the outer rotor is reduced in inverse proportion to a square of a distance occupied by the magnetic member, Wherein the magnetic coupling is applied to the main body of the tidal generator. A cylindrical base,
An inflow blocking portion for sealing the one side of the base,
A cylindrical outer rotor having an outer magnet disposed on the outer side of the inflow blocking portion and provided with an N pole and an S pole alternating with each other along an inner circumference,
A cylindrical inner rotor disposed inside the inflow blocking portion and provided to face the outer magnet in the outer rotor and having an inner magnet for transmitting or transmitting a magnetic force,
A bearing portion mounted on front and rear sides of the inflow blocking portion to assist rotation of the inner rotor and the outer rotor,
And a magnetic member provided along the outer periphery of the inner rotor and in contact with the inner magnet,
Wherein the inflow blocking portion is positioned between the inner rotor and the outer rotor to form a watertight structure while maintaining a mutual distance between the inner rotor and the outer rotor,
Wherein the magnetic member is an electromagnet or electromagnet,
An attractive force due to a magnetic force between the inner rotor and the outer rotor is reduced in inverse proportion to a square of a distance occupied by the magnetic member, Wherein the magnetic coupling is applied to the main body of the tidal generator. delete A cylindrical base,
An inflow blocking portion for sealing the one side of the base,
A cylindrical inner rotor disposed inside the inflow blocking portion and provided with an inner magnet alternating between an N pole and an S pole;
A cylindrical outer rotor having a hollow portion formed on an outer side of the inflow blocking portion and opposed to the inner magnet in the inner rotor and having an outer magnet for transmitting or transmitting a magnetic force,
A bearing portion mounted on front and rear sides of the inflow blocking portion to assist rotation of the inner rotor and the outer rotor,
A first magnetic member disposed along a periphery of the outer rotor and in contact with the outer magnet,
And a second magnetic body member disposed along the outer periphery of the inner rotor, the second magnetic body member being in contact with the inner magnet,
Wherein the inflow blocking portion is positioned between the inner rotor and the outer rotor to form a watertight structure while maintaining a mutual distance between the inner rotor and the outer rotor,
Wherein the first and second magnetic member members are electromagnets or electromagnets,
When the first and second magnetic member members lose their magnetic force depending on whether power is applied or not, an attractive force due to the magnetic force between the inner and outer rotors is applied to the first and second magnetic member members, Wherein the magnetic coupling is applied to the main body of the tidal generator. delete

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